{ pkgs, config, lib, ... }:

let
	inherit (lib) mkOption types;
in
	{

	options.batMode = mkOption {
		type = types.enum [ "single" "double" ];
		default = "single";
		description = "Select 'single' for one battery and 'double' for dual setup";
	};

	# Dont run a tandem with tlp
	#options.services.auto-cpufreq.enable = true;
	#options.services.auto-cpufreq.settings = {
	#	battery = {
	#		governor = "powersave";
	#		turbo = "never";
	#	};
	#	charger = {
	#		governor = "performance";
	#		turbo = "auto";
	#	};
	#};

	config = {
		powerManagement.powertop.enable = true;
		services.upower = {
			enable = true;

			# In accordance with the waybar battery colors
			percentageLow = 30;
			percentageCritical = 20;
			percentageAction = 10;

			#percentageAction = "PowerOff";
			criticalPowerAction = "PowerOff"; # This can destroy work
			usePercentageForPolicy = true;
		};

		services.tlp = if config.batMode == "single" then {
			enable = true;
			settings = {
				#Optional helps save long term battery health
				# Going almost full because the other bat is also charged
				# 0 NEW first
				START_CHARGE_THRESH_BAT0 = 65;
				STOP_CHARGE_THRESH_BAT0 = 85;

				CPU_SCALING_GOVERNOR_ON_AC = "performance";
				#CPU_SCALING_GOVERNOR_ON_BAT = "powersave";

				#CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
				CPU_ENERGY_PERF_POLICY_ON_AC = "performance";

				CPU_MIN_PERF_ON_AC = 0;
				CPU_MAX_PERF_ON_AC = 100;
				CPU_MIN_PERF_ON_BAT = 0;
				CPU_MAX_PERF_ON_BAT = 65;


			};
		} else {
			enable = true;
			settings = {
				# Have to keep it this way or
				# Otherwise the buil in stop at 5% stops worky
				# The problem is here that only the second battery gets seen from the charging cap
				# Workaround. Just charge the battery when you use it and then turn manually the battery off
				# I mean it is the state you generate now that you can use on any laptop. so
				CPU_SCALING_GOVERNOR_ON_AC = "performance";
				CPU_SCALING_GOVERNOR_ON_BAT = "powersave";

				CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
				CPU_ENERGY_PERF_POLICY_ON_AC = "performance";

				CPU_MIN_PERF_ON_AC = 0;
				CPU_MAX_PERF_ON_AC = 100;
				CPU_MIN_PERF_ON_BAT = 0;
				CPU_MAX_PERF_ON_BAT = 75;

				# 0 NEW first
				START_CHARGE_THRESH_BAT0 = 60;
				STOP_CHARGE_THRESH_BAT0 = 85;

				# 1 OLD second
				START_CHARGE_THRESH_BAT1 = 60;
				STOP_CHARGE_THRESH_BAT1 = 85;
			};
		};

	};
}